Broadband VHF communication and data transmission ground antenna

Abstract

The utility model discloses a broadband VHF communication and data transmission ground antenna, and belongs to the technical field of antennas. The broadband VHF communication and data transmission ground antenna comprises a main body, the main body comprises a base, one end of the base is externally in threaded connection with a supporting pipe, one end, far away from the base, of the supporting pipe is internally provided with a circular groove, the circular groove is internally provided with a protective cover, the base is internally provided with a through hole, and the through hole is internally provided with a choke. A coaxial cable is installed at the position, away from the through hole, in the base, a socket is welded to the end, away from the choke, of the coaxial cable, a sleeve is installed in the protective cover, a lower vibrator is installed at one end in the sleeve, an upper vibrator is installed at one end, away from the lower vibrator, in the sleeve, and one end of the coaxial cable penetrates through the choke to extend to the outside. An outer conductor of the coaxial cable is welded with an outer conductor of the rheostat, and an inner conductor of the coaxial cable is welded with an inner conductor of the rheostat.

Description

TECHNICAL FIELD

[0001] The utility model relates to antenna technical field, concretely is wideband VHF communication and data transmission ground antenna. BACKGROUND

[0002] The power module is a power supply that can be directly mounted on a printed circuit board, and its main function is to provide power for application-specific integrated circuits, digital signal processors, microprocessors, memories, field programmable gate arrays and other digital or analog loads. Power modules are widely used in various fields, including switching equipment, access equipment, mobile communication, microwave communication, optical transmission and other communication fields.

[0003] Based on the above, the present inventor found that there are the following problems: the current VHF communication and data transmission ground antenna can only be applied to 108MHz-118MHz, and its working frequency bandwidth and standing wave ratio cannot meet the working environment of 108MHz-156MHz, which limits the use of VHF communication and data transmission ground antenna, thereby reducing the practicability of VHF communication and data transmission ground antenna.

[0004] Therefore, in view of the above problems, the wideband VHF communication and data transmission ground antenna is provided to improve the existing structure and defects, so as to achieve the purpose of having more practical value. SUMMARY

[0005] The utility model aims at providing wideband VHF communication and data transmission ground antenna to solve the problems in the above background.

[0006] In view of the above problems, the technical scheme provided by the utility model is:

[0007] The wideband VHF communication and data transmission ground antenna comprises a main body, the main body comprises a base, one end of the base is externally threadedly connected with a support pipe, a circular groove is formed in the inner end of the support pipe away from the base, a protective cover is arranged in the inner end of the circular groove, a through hole is formed in the inner end of the base, a choke is arranged in the inner end of the through hole, a coaxial cable is arranged in the inner end of the base away from the through hole, a socket is welded to the end of the coaxial cable away from the choke, a sleeve is arranged in the inner end of the protective cover, a lower vibrator is arranged in the inner end of the sleeve, and an upper vibrator is arranged in the inner end of the sleeve away from the lower vibrator.

[0008] The beneficial effect of the above further scheme is that, by using the lower vibrator, the upper vibrator, the sleeve, the rheostat and the choke in cooperation, the central part between the upper vibrator and the lower vibrator is fed by the middle feeder, the current is more evenly distributed on the antenna by using the middle feeder, the radiation efficiency and the receiving sensitivity of the antenna are improved, and meanwhile, the current can be evenly distributed on the lower vibrator and the upper vibrator due to the central feeding point, the stability is improved, and meanwhile, the middle feeder realizes high impedance of the antenna bottom to the ground, the choke eliminates the opposite current of the outer conductor of the coaxial cable, the rheostat realizes the conversion between the imbalance and the balance between the input impedance and the antenna impedance, and the antenna standing wave ratio is effectively reduced.

[0009] Further, one end of the coaxial cable extends to the outside through the choke, and the outer conductor of the coaxial cable is welded with the outer conductor of the rheostat, and the inner conductor of the coaxial cable is welded with the inner conductor of the rheostat.

[0010] The beneficial effect of the above further scheme is that, since the outer conductor of the coaxial cable is welded with the outer conductor of the rheostat, and the inner conductor of the coaxial cable is welded with the inner conductor of the rheostat, the coaxial cable transmits the signal, the input signal is transmitted to the rheostat, the rheostat realizes the matching between the input impedance and the impedance of the antenna itself by changing the characteristic impedance, the amplitude and the frequency of the signal are adjusted, and thus the optimized processing of the signal is realized.

[0011] Further, the outer conductor of the rheostat is welded with the lower vibrator at the end away from the coaxial cable, and the inner conductor of the rheostat is welded with the upper vibrator.

[0012] The beneficial effect of the above further scheme is that, since the outer conductor of the rheostat is welded with the lower vibrator, and the inner conductor of the rheostat is welded with the upper vibrator, the input signal processed and optimized is transmitted to the upper vibrator and the lower vibrator.

[0013] Further, one end of the base is externally provided with external threads, the inner wall of the support pipe near the one end of the base is internally provided with internal threads, and the external threads and the internal threads are engagedly connected.

[0014] The beneficial effect of the above further scheme is that, by using the external threads and the internal threads in cooperation, the connection between the base and the support pipe is stable.

[0015] Further, the inner diameter of the circular groove is greater than the inner diameter of the support pipe, the outer wall of one end of the protective cover is gap-fitted with the inner wall of the circular groove, and the outer wall of one end of the protective cover is connected with the inner wall of the circular groove through sealing glue.

[0016] The beneficial effect of the further scheme is that, since the inner diameter of the circular groove is larger than the inner diameter of the supporting tube, when the protective cover is inserted into the circular groove and continuously pushed into the circular groove, when one end of the protective cover abuts against the inner side wall of the circular groove, the one end of the protective cover is completely immersed in the interior of the circular groove, and the one end outer wall of the protective cover is connected with the inner wall of the circular groove through sealing glue, so that the protective cover is tightly connected with the supporting tube, and the sealing property between the protective cover and the supporting tube is improved.

[0017] Compared with the prior art, the wideband VHF communication and data transmission ground antenna has the beneficial effects that: the lower dipole, the upper dipole, the sleeve, the rheostat and the choke are cooperatively used, the central part between the upper dipole and the lower dipole is fed by the middle feeding, the current is more uniformly distributed on the antenna by the middle feeding, the radiation efficiency and the receiving sensitivity of the antenna are improved, the current can be uniformly distributed on the lower dipole and the upper dipole due to the fact that the feeding point is located at the center, the stability is improved, the sleeve effectively widens the frequency band of the antenna, the choke eliminates the opposite-phase current of the outer conductor of the coaxial cable, the rheostat realizes the conversion between the imbalance between the input impedance and the antenna impedance and the balance, effectively reduces the antenna standing wave ratio, and the rheostat realizes the matching between the input impedance and the antenna impedance by changing the characteristic impedance, adjusts the amplitude and the frequency of the signal, and thus realizes the optimal processing of the signal. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A perspective structural schematic view of the wideband VHF communication and data transmission ground antenna is provided in the utility model.

[0019] Figure 2 A sectional view of the base of the wideband VHF communication and data transmission ground antenna is provided in the utility model.

[0020] Figure 3 A sectional view of the supporting tube and the protective cover of the wideband VHF communication and data transmission ground antenna is provided in the utility model.

[0021] Figure 4 A partial front sectional view of the wideband VHF communication and data transmission ground antenna is provided in the utility model.

[0022] In the drawing: 100, main body; 1001, base; 1002, socket; 1003, coaxial cable; 1004, through hole; 1005, choke; 1006, supporting tube; 1007, circular groove; 1008, protective cover; 1009, sleeve; 1010, lower dipole; 1011, upper dipole; 1012, rheostat. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0024] Please refer to Figures 1-4 The utility model provides technical scheme: broadband VHF communication and data transmission ground antenna, including main part 100, main part 100 includes base 1001, the one end outside screw thread connection of base 1001 has support tube 1006, the one end inside of support tube 1006 away from base 1001 is seted up round groove 1007, the inside of round groove 1007 is equipped with protective cover 1008, the inside of base 1001 is seted up through -hole 1004, the inside installation of through -hole 1004 has inductor 1005, the inside installation of base 1001 away from through -hole 1004 has coaxial cable 1003, the one end welding of coaxial cable 1003 away from inductor 1005 has socket 1002, the inside installation of protective cover 1008 has sleeve 1009, the inside one end installation of sleeve 1009 has lower vibrator 1010, and the inside installation of sleeve 1009 away from lower vibrator 1010 one end has upper vibrator 1011, through the cooperation of lower vibrator 1010, upper vibrator 1011, sleeve 1009, variable resistor 1012 and inductor 1005, the center between upper vibrator 1011 and lower vibrator 1010 adopts middle -part feed, by adopting middle -part feed, makes the current distribution more evenly on the antenna, improves the radiation efficiency and receiving sensitivity of antenna, simultaneously because feed point is located in the center, makes the current evenly distributed on lower vibrator 1010 and upper vibrator 1011, improves stability, and middle -part feed realizes that the antenna bottom presents high impedance to ground, sleeve 1009 effectively widens the frequency band of antenna, enhances the radiation efficiency, and resonates better, inductor 1005 eliminates the opposite current of the outer conductor of coaxial cable 1003, variable resistor 1012 realizes the conversion between the unbalance and balance between input impedance and antenna impedance, effectively reduces the antenna standing wave ratio and improves antenna efficiency.

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0026] Please refer to Figures 1-4The utility model provides technical scheme: one end of coaxial cable 1003 passes through the choke 1005 and extends to outside, and the outer conductor of coaxial cable 1003 is welded with the outer conductor of rheostat 1012, the inner conductor of coaxial cable 1003 is welded with the inner conductor of rheostat 1012, the outer conductor of rheostat 1012 is welded with lower vibrator 1010 away from one end of coaxial cable 1003, and the inner conductor of rheostat 1012 is welded with upper vibrator 1011, one end outside of base 1001 is equipped with outer thread, and the inner wall of the one end of support tube 1006 close to base 1001 is equipped with inner thread, and the outer thread is connected between the engagement of inner thread, the inner diameter of round groove 1007 is greater than the inner diameter of support tube 1006, and the outer wall of one end of protective cover 1008 and the inner wall of round groove 1007 gap fit, and the outer wall of one end of protective cover 1008 and the inner wall of round groove 1007 are connected through sealing glue, because the outer conductor of coaxial cable 1003 is welded with the outer conductor of rheostat 1012, the inner conductor of coaxial cable 1003 is welded with the inner conductor of rheostat 1012, and the signal transmission of coaxial cable 1003, input signal is transmitted to rheostat 1012, and the amplitude and frequency of signal are adjusted through the change of rheostat 1012 resistance value, thereby realizing the optimization processing of signal, because the outer conductor of rheostat 1012 is welded with lower vibrator 1010, and the inner conductor of rheostat 1012 is welded with upper vibrator 1011, the input signal of processing optimization is transmitted to upper vibrator 1011 and lower vibrator 1010, the cooperation of outer thread and inner thread is used, and the connection between base 1001 and support tube 1006 is stable, because the inner diameter of round groove 1007 is greater than the inner diameter of support tube 1006, when protective cover 1008 is inserted to the inside of round groove 1007 and is continuously pushed to the inside of round groove 1007, when the one end of protective cover 1008 and the inner wall of round groove 1007 abut, at this moment, the one end of protective cover 1008 is completely immersed in the inside of round groove 1007, the outer wall of one end of protective cover 1008 and the inner wall of round groove 1007 are connected through sealing glue, the tight connection between protective cover 1008 and support tube 1006 is realized, and the sealing property between protective cover 1008 and support tube 1006 is improved.

[0027] Specifically, the working principle of the broadband VHF communication and data transmission ground antenna: in use, through the cooperation of the lower oscillator 1010, the upper oscillator 1011, the sleeve 1009, the variable resistor 1012 and the choke 1005, the center between the upper oscillator 1011 and the lower oscillator 1010 adopts middle feeding, the current is more evenly distributed on the antenna by adopting middle feeding, the radiation efficiency and receiving sensitivity of the antenna are improved, at the same time, due to the feeding point being located at the center, the current can be evenly distributed on the lower oscillator 1010 and the upper oscillator 1011, the stability is improved, at the same time, the middle feeding realizes that the antenna bottom presents high impedance to the ground, the sleeve 1009 effectively widens the frequency band of the antenna, the choke 1005 eliminates the opposite current of the outer conductor of the coaxial cable 1003, the variable resistor 1012 realizes the conversion between the imbalance and balance between the input impedance and the antenna impedance, effectively reduces the antenna standing wave ratio, due to the outer conductor of the coaxial cable 1003 being welded with the outer conductor of the variable resistor 1012, the inner conductor of the coaxial cable 1003 being welded with the inner conductor of the variable resistor 1012, the coaxial cable 1003 transmitting signals, then transmitting the input signals to the variable resistor 1012, the variable resistor 1012 adjusting the amplitude and frequency of the signals by changing the resistance value, so as to realize the optimization processing of the signals, due to the outer conductor of the variable resistor 1012 being welded with the lower oscillator 1010 and the inner conductor of the variable resistor 1012 being welded with the upper oscillator 1011, transmitting the input signals processed and optimized to the upper oscillator 1011 and the lower oscillator 1010, through the cooperation of the external thread and the internal thread, the connection between the base 1001 and the support pipe 1006 is stable.

Claims

1. A broadband VHF communications and data transmission terrestrial antenna, characterized in that, The utility model provides a kind of coaxial cable, including main body (100), the main body (100) includes base (1001), one end of the base (1001) is externally threaded with support tube (1006), the support tube (1006) is internally opened with circular groove (1007) away from one end of base (1001), the inside of circular groove (1007) is equipped with protective cover (1008), the inside of base (1001) is opened with through-hole (1004), the through-hole (1004) is equipped with choke (1005) inside, coaxial cable (1003) is installed in the inside of base (1001) away from through-hole (1004), the one end of coaxial cable (1003) is welded with socket (1002) away from choke (1005), the inside of protective cover (1008) is equipped with sleeve (1009), the inside of sleeve (1009) is equipped with lower vibrator (1010) one end, and the inside of sleeve (1009) is equipped with upper vibrator (1011) away from lower vibrator (1010) one end.

2. The wideband VHF communication and data transmission terrestrial antenna of claim 1, wherein, One end of the coaxial cable (1003) extends to the outside through the choke (1005), and the outer conductor of the coaxial cable (1003) is welded with the outer conductor of the variable resistor (1012), and the inner conductor of the coaxial cable (1003) is welded with the inner conductor of the variable resistor (1012).

3. The wideband VHF communication and data transmission terrestrial antenna of claim 2, wherein, The outer conductor of the variable resistor (1012) is welded with the lower vibrator (1010) away from the coaxial cable (1003), and the inner conductor of the variable resistor (1012) is welded with the upper vibrator (1011).

4. The wideband VHF communication and data transmission terrestrial antenna of claim 1, wherein, One end of the base (1001) is externally threaded, the inner wall of the support tube (1006) near the base (1001) is internally threaded, and the external thread is engaged with the internal thread.

5. The wideband VHF communication and data transmission terrestrial antenna of claim 4, wherein, The inner diameter of the circular groove (1007) is greater than the inner diameter of the support tube (1006), the outer wall of one end of the protective cover (1008) is gap-fitted with the inner wall of the circular groove (1007), and the outer wall of one end of the protective cover (1008) is connected with the inner wall of the circular groove (1007) by sealing glue.

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